She is the daughter of director Erik Pöysti and granddaughter of Finnish actors Lasse Pöysti and Birgitta Ulfsson.
[1] Pöysti has also lived and worked in Sweden.
[2][3] In 2023, she was nominated for the Golden Globe Award for Best Actress – Motion Picture Comedy or Musical for Fallen Leaves.
[4][5] Pöysti studied at the University of the Arts Helsinki from 2003 to 2007, then worked at the Swedish Theatre and the Finnish National Theatre.
[5][8] This Finnish biographical article is a stub.